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WARNING! Improper use of any power tool may cause serious
or fatal injury. Read, understand and follow carefully the operating
and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.

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HP Ultra is a fully synthetic 2-cycle engine oil specially suited for high performance chainsaws and power tools. This oil has outstanding engine cleaning characteristics, plus “ultra” superior lubricating qualities in comparison to other 2-cycle engine oils. It is ideal for use in STIHL 4-MIX® engines. This oil is biodegradable, degrading by 80% in 21 days.

•2.6 oz. bottle makes 1 gallon mix

•5.2 oz. bottle makes 2 gallon mix

•6.4 oz. bottle makes 2 1/2 gallon mix

•12.8 oz. bottle makes 5 gallon mix

STIHL recommends a mix of 50:1 high-quality 89 octane or higher unleaded gasoline to STIHL engine oil. This same mix ratio should be used during break-in.

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FS-KM Line Head Trimmer Description

Trimmer AttachmentUses the dependable AutoCut® head. Designed for mowing and trimming around obstacles.

NOTE: STIHL KombiMotors and STIHL KombiSystem attachments are sold separately.

FS-KM Line Head Trimmer

FS-KM Line Head Trimmer

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FS-KM Line Head Trimmer is rated 3.7 out of 5 by 36.

Rated 4 out of 5 by CtArcher from Almost perfect but has one caveatI purchased this in combination with a 111 power head. It's a great combination. The 111 drives this thing perfectly. I replaced a homeowner type gas trimmmer with this and have also used home owner Stihl trimmers and a couple professional dedicated trimmers. Comparatively speaking this thing is a beast. I usually run it along my edged beds in a verticle position to quasi-edge my lawn. It works well for this. I did notice on the first day that the trimmer line does often break off right by the head. That was a pain for the first 15 minutes. Others have complained about the same issue. I then started refreshing the string (tapping it and letting out more line) more frequently, keeping the line length longer. This solved the issue completely. Now it's a pleasure to use. Replacing the string is fairly easy compared to my old big box store trimmer.... and it holds a lot more. I use this addition to a bunch of other Kombi attachments. Overall the Kombi system is a fantastic system. Highly recommend. I hope this review was helpful!

Date published: 2017-11-29

Rated 5 out of 5 by Hellgrom502 from Shin/Echo Speed feed headJust buy the Shindiwa/Echo speed feed head when you get this.Speed Feed head come's with attachments to put on Stihl and you have the perfect product Speed feed head is the only good thing Shin/Echo make's Dont give Stihl a bad Name because you Dont know how to restring a trimmer do Some research first or drive up to the first professional Landscaper you see with stihl products and ask them to show you

Date published: 2017-11-01

Rated 5 out of 5 by Rodger47 from Love this trimmerAfter having had a Poluan pro for almost 20 years I replaced it with this product. I do not understand the negative reviews over line issues. You wind it on evenly and it works fine. If you have a problem figuring out how to do it there's a YouTube link on the website on how to do it. I have never encountered a better string trimmer. The only negative thing I could possibly say is that I could not find anywhere in the manual that specified the string size. But my salesman said I could use 90 or 105.

Date published: 2017-08-28

Rated 3 out of 5 by JJ4218 from Poor documentation and supportI just purchased the FS-KM Line Head Trimmer and had to return it to the dealer because it would not work. The trimmer was fixed so I used it several times and then had to replace the line. So how much line goes on the spool? I went to the manual to get instructions on how to rewind the string. There are no instructions!! Really!!!!This information should be on the inside cover of the manual!!! It's not even on the website under the specific product! Poor design!I called the 800 number and left a message for technical support and sent in a request for the information on the website. After 2 hours I did receive a call back with the magic number of "about 12ft". Something so basic makes me wonder if I made the correct brand decision.

Date published: 2017-08-25

Rated 2 out of 5 by jacobsgh from Frustrating line breaksI just don't understand Stihl! I bought it because I wanted the best and the best support. The string broke twice within the first 20 minutes of use. If you need to soak the string, the dealer should have told us this. Instead the dealer said we must be cutting things with a diameter larger than it could handle. This was not the case.So then I went to the manual to get instructions on how to rewind the string. There are no instructions!! That is inexcusable! I will try soaking the string or installing new string, assuming I can find some instructions, but if this continues to happen, I'm taking it back and expect a full refund.

Date published: 2017-07-05

Rated 5 out of 5 by Senecaman from Kombi SystemBought a year ago and love it !!! Even after winter started up with three pulls. Got this with the pole saw, and even after hours of use taking care of 12 plus acres I'm as pleased as the day I first got it. Highly recommend to anybody who has a large property to care for.

Date published: 2017-06-28

Rated 5 out of 5 by Kw128 from Great trimmerNo string problems works great. I did buy the larger shield.

Date published: 2017-06-19

Rated 4 out of 5 by Hardgarrison from Trims nice, but buy a face shieldReplaced a 20 year old FS36 with a new kombi system power head and the FS-KM trimmer. This is a nice replacement set up. Starts much easier, not as loud, and a larger gas tank.I have not had any of the string problems mentioned by others here after re-wraping the string on the head cleaner then how it came from the dealer.My only dislike is with the very small string shield, grass, sand, and small pebbles fly everywhere including up into your face. I suggest if you do not already own one purchase a face mask right away if you purchase this head. I have always used safety glasses and hearing protection in the past, that is not sufficient for this model.

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STIHL IS THE NUMBER ONE SELLING BRAND OF GASOLINE-POWERED HANDHELD OUTDOOR POWER EQUIPMENT IN AMERICA.*

*"Number one selling brand" is based on syndicated Irwin Broh Research as well as independent consumer research of 2009-2016 U.S. sales and market share data for the gasoline-powered handheld outdoor power equipment category combined sales to consumers and commercial landscapers.

*A majority of STIHL gasoline-powered units sold in the United States are built in the United States from domestic and foreign parts and components.